Finding the Fourth Proportional to 212,989.70, 319,213.20 and 113,197.70
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Solution
The fourth proportional to 212,989.70, 319,213.20 and 113,197.70 is: 169,652.34
Step by Step Solution
- Step 1: Write the proportion equation
212,989.70 : 319,213.20 = 113,197.70 : x - Step 2: Convert to fraction form
212,989.70/319,213.20 = 113,197.70/x - Step 3: Cross multiply
212,989.70x = 319,213.20 × 113,197.70 - Step 4: Simplify right side
212,989.70x = 36,134,200,049.64 - Step 5: Solve for x
x = 36,134,200,049.64/212,989.70 - Step 6: Final answer
x = 169,652.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.